System Administrator (OpenShift & Kubernetes)

Brown Brothers Harriman & Co.; Kraków; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Private medical care

Life Insurance

Employee Assistance Program

Professional trainings

Wellbeing Program

Onboarding Program

Culture Celebration Day

Community Service Day

Online Social Fund benefit platform

Social, sport and integration events

Job summary

Brown Brothers Harriman in Kraków is seeking a System Administrator to join our Infrastructure Strategy team. You will operate, maintain, and extend OpenShift and Kubernetes clusters, partnering with developers to ensure a reliable container platform.

The role includes monitoring, incident response, CI/CD pipeline automation, and support for platform services, with a hybrid work setup and ongoing opportunities to learn advanced technologies.

Qualifications

• Hands-on experience administering Red Hat OpenShift in production, including installation, upgrades, monitoring, and troubleshooting
• Strong knowledge of Kubernetes concepts and operations, including workloads, networking, storage, security, and RBAC
• Experience supporting containerized applications and working with Docker or other OCI-compatible container tools
• Proficiency with Linux administration and scripting or automation using tools
• Working knowledge of CI/CD and tools such as Git, Jenkins, Jira, and Nexus
• Strong troubleshooting and problem-solving skills across distributed systems, networks, and application platforms
• Ability to communicate clearly, collaborate with application and infrastructure teams, and maintain high-quality technical documentation
• Willingness to participate in an on-call rotation and to learn new platform technologies
• Preferred: Proficiency in deploying and supporting Kubernetes platform
• Preferred: Computer Science background and strong interest in working on highly technical systems

Responsibilities

• Install, configure, administer, patch, and upgrade OpenShift and Kubernetes clusters across their lifecycle
• Monitor cluster health, capacity, performance, availability, and security; identify risks and implement preventative improvements
• Provide day-to-day operational support for containerized applications, including onboarding, deployment, configuration, scaling, and troubleshooting
• Partner with development teams to migrate applications to the container platform and promote reliable operating practices
• Build, maintain, and improve CI/CD pipelines and automation for platform and application deployments
• Administer supporting platform services, including container registries, storage, logging and monitoring, Kafka/Strimzi, and OpenTelemetry for Splunk
• Manage platform access, certificates, secrets, networking, backup and recovery procedures, and configuration in line with security and compliance requirements
• Create and maintain accurate documentation, runbooks, architecture records, and operational procedures
• Investigate incidents and recurring problems, coordinate resolution of high-severity issues, and provide clear summaries to senior management
• Participate in an on-call rotation supporting production platforms and containerized applications

Skills

OpenShift administration

Kubernetes knowledge

Linux scripting/automation

Communication and collaboration

Documentation

On-call readiness

Tools

OpenShift

Kubernetes

Docker

Git

Jenkins

Jira

Nexus

CI/CD pipelines

Job description

Introduction

At BBH, Partnership is more than a form of ownership-its our approach to business and relationships. We know that supporting your professional and personal goals is the best way to help our clients and advance our business. We take that responsibility seriously. With a 200-year legacy and a shared passion for what’s next, this is the right place to build a fulfilling career.

Location

Kraków

Hybrid model: 3 days per week in the office / 2 days for a parent of a child up to 4 years old

About the team

We are looking for a System Administrator to join our Infrastructure Strategy team. In this role, you will operate, maintain, upgrade, secure, and monitor multiple OpenShift clusters and the services that support them. You will partner with application teams to onboard, deploy, troubleshoot, and maintain containerized applications, helping ensure a reliable, scalable, and well-governed platform.

Responsibilities

• Install, configure, administer, patch, and upgrade OpenShift and Kubernetes clusters across their lifecycle
• Monitor cluster health, capacity, performance, availability, and security; identify risks and implement preventative improvements
• Provide day-to-day operational support for containerized applications, including onboarding, deployment, configuration, scaling, and troubleshooting
• Partner with development teams to migrate applications to the container platform and promote reliable operating practices
• Build, maintain, and improve CI/CD pipelines and automation for platform and application deployments
• Administer supporting platform services, including container registries, storage, logging and monitoring, Kafka/Strimzi, and OpenTelemetry for Splunk
• Manage platform access, certificates, secrets, networking, backup and recovery procedures, and configuration in line with security and compliance requirements
• Create and maintain accurate documentation, runbooks, architecture records, and operational procedures
• Investigate incidents and recurring problems, coordinate resolution of high-severity issues, and provide clear summaries to senior management
• Participate in an on-call rotation supporting production platforms and containerized applications

Requirements

• Hands-on experience administering Red Hat OpenShift in production, including installation, upgrades, monitoring, and troubleshooting
• Strong knowledge of Kubernetes concepts and operations, including workloads, networking, storage, security, and role-based access control
• Experience supporting containerized applications and working with Docker or other OCI-compatible container tools
• Proficiency with Linux administration and scripting or automation using tools
• Working knowledge of CI/CD and tools such as Git, Jenkins, Jira, and Nexus
• Strong troubleshooting and problem-solving skills across distributed systems, networks, and application platforms
• Ability to communicate clearly, collaborate with application and infrastructure teams, and maintain high-quality technical documentation
• Willingness to participate in an on-call rotation and to learn new platform technologies
• Preferred: Proficiency in deploying and supporting Kubernetes platform
• Preferred: Computer Science background and strong interest in working on highly technical systems

Benefits

• BBHers have 1 Culture Celebration Day and 1 Community Service Day in addition to their paid standard vacation allowance
• Private medical care
• Life Insurance
• Employee Assistance Program - offering independent and confidential counselling services for you and your family. You can get support for topics including family, marriage and relationships, finances, and legal issues.
• Professional trainings and qualification support
• Wellbeing Program
• Online Social Fund benefit platform
• Social, sport and integration events
• Onboarding Program for new hires

Company culture

We value diverse experiences and transferrable skillsets. If your career hasn’t followed a traditional path, includes alternative experiences, or doesn’t meet every qualification or skill listed in the job description.

About BBH

Brown Brothers Harriman (BBH) is a premier global financial services firm, known for premium service, specialist expertise, technology solutions and partnership approach to client management. Across Investor Services and Capital Partners, we work with an enviable roster of sophisticated clients who make BBH their first call when they are tackling their hardest challenges. Delivering for our clients and each other energizes us. We believe that how we do our work is just as important as what we do. We are relentless problem solvers who know our best ideas come from collective debate and development-so we are never possessive about our ideas. Every day we come together as a diverse community of smart and caring people to deliver exceptional service and expert advice—creating success that lasts. No matter where you sit in the organization, everyone is empowered to contribute their ideas. BBHers can pick up the phone and call any colleague, and they are happy to help. Expanding your impact beyond your daily role is part of how we operate as trusted partners to one another. We believe stability is a competitive advantage, but being stable means having the knowledge, skill, and discipline to evolve, often-long-term, pushing the boundaries of innovation. As a private partnership, every investment we make is in the relationships, technologies, products and development we believe are in the long-term interests of our clients and our people. Our long-tenured leaders are experts in their areas and are actively involved in the day-to-day business, taking the time to provide guidance and mentoring to build the next generation of BBHers. Because we know, our success begins with yours.